There has never been a Korean idol star who has been of Japanese descent. The closest thing we ever had to a Japanese idol star was, ex-Jewelry singer, Ayumi who was a Korean born in Japan. Despite the lack of Japanese descent idols in Korea, Japan loves their K-pop idols and our performers have found huge success in the Land of the Rising Sun. But in order to win over the hearts of Japanese fangirls and boys, it's important to speak their native tongue. Let's take a look at the idols who are most fluent in Japanese!

I can't start off this list without putting BoA at the top of it. The Hallyu star may be a household name in Korea, but she's an even bigger star in Japan. She made it huge with her single, "Listen to My Heart," which skyrocketed her into new heights. Her debut album in 2012 was the breakthrough that eventually made her one of the most famous singers in Asia to date. Her Japanese is flawless and she sounds beautiful speaking it. Check her out below:

TVXQ's Yunho and Changmin are fluent in Japanese. The Pagoda Academy of Foreign Languages conducted a survey where they concluded that the Hallyu star who spoke Japanese the best went to TVXQ's Yunho. They say he's got a natural knack for the language and his usage of Japanese slang fits in just fine with Japanese folk. Changmin on the other hand has got the Japanese expressiveness and vocabulary down which got him to the #4 spot on the poll.

Girls' Generation's Sooyoung speaks Japanese quite beautifully! Who knew?The "Gee" singer was active in Japan for 3 years where she learned the language. Listen to how pretty she sounds speaking the language below: